1 files changed, 1 insertions, 1 deletions

diff --git a/src/filelock.c b/src/filelock.c
index 81d98f36fa4..bcd5bff563d 100644
--- a/src/filelock.c
+++ b/src/filelock.c
@@ -152,7 +152,7 @@ get_boot_time (void)
     mib[1] = KERN_BOOTTIME;
     size = sizeof (boottime_val);
 
-    if (sysctl (mib, 2, &boottime_val, &size, NULL, 0) >= 0)
+    if (sysctl (mib, 2, &boottime_val, &size, NULL, 0) >= 0 && size != 0)
       {
         boot_time = boottime_val.tv_sec;
         return boot_time;